Improvement in pointing wire for pins



O. L. HOPS'ON & H. P. BROOKS. POINTING- WIRE FOR PINS. No. 43,772,Patented Aug. 9, 1864.

UNITED STATES PAW ORIN n. norson AND HEMAN P. BROOKS, OF WATERBURY,oonnnorionr.

IMPROVEMENT IN POINTING WIREFOR PINS.

Specification forming part of Letters Patent No. 43.772, dated August 9,i864.

To all whom, it may concern.-

Be it known that-we, ORIN L. HOPSON and HEMAN P. Bnoons, of Waterburyyinthe county of New Haven and State of Connecticut, have invented, made,and applied to usea certain new and useful means ior pointingwire orrods for pins, &c.; and we do hereby declare-the following to be a full,clear, and exact description of the said invention, referencebeing hadto the annexed drawings makinn part of this Specification, wherein-Figure 1 is a longitudinal section of our improved means for pointingWire, and Fig. 2 is an end view representing the camsf'or actuating thepointing-dies. 7

Similar marks of reference-denote the same parts.

The nature of our said invention consists in pointing wires or rods by arevolving divided diethat is pressed together two ormore times duringeach revolution, said die being of the shape required for the point, andhence the wire forming the point is gradually compressed and extended tothe form and shape required at said point without producing any burr,(as is usual in the compressing and pointing dies heretofore employed,)and the point is consolidated and rendered much harder that when reducedor grinding.

1n the drawings, a is the'inandrel head or frame carrying the mandrel orshaft b, that is driven by competent power applied at the pulley orwheel 0. Near the end of this shaft b is a longitudinal grooveor recessreceiving the jaw 07, that is held in place by the cross-pin e, or othersuitable means, so that said jaw 01 can receive a slight swinging oropening movement to receive the wire between the parts on the line ofthe center or axis of the said shaft b.

f is a ringaround b and d, with a screw, 9, passing through the same andentering a cavity in d. This screw graduates the amount the jaw 02 canmove or open for the admission of the end of the wire to be pointed.

i i are d-ie's formed with an opening of the shape of the pointrequired,and the respective parts of the die are attached to b and d, so that thecavity in said dies is on the axial to shape by filing line of the shaftb. Around the end of this shaft b is a stationary ring, h, with radialslots receiving the cams k, thatare adjusted by the screws l or othersuitable means.

The mode of operating this machine is as follows: The endof the piece ofwire to be pointed or otherwise shaped is entered between the dies 2' iand pressed into them, which slightly opens said dies. The revolution ofthe shaft 0 brings the projection 0 of the jaw d into contact with theend of one of the cam-3k, which cam is adjusted so that it will closethe dies 2' Land in so doing compress the wire or rod, and theseoperations are repeated, the end of the wire being'pressed in a littlefarther each time the jaw is releived and allowed to slightly open,until the point is perfectly formed, which point is of the shape of thedie-opening,.and is compressed and ex. tenedwithcut forming an y burr orprojection on the same, and the point is rendered much harder by thiscompressing actionthan would be the case if the metal was filed orground away to form the point.

It will be. evident that if only two cams ]a were employed'they wouldrequire to'be at right angles to each other, so as to operate on bothsides of the wire, and where a large number of radial cams are used theoperation of forming the point will be effected equally fast with aslower rotation of'the shaft b than in case where but few of theseradiating cams are employed. This mode of pointing has the effect ofsmoothing the surface acted upon by the rotary movement of the dies.

The mechanism herein set forth may be employed for shaping in a circularform any other article besides a point to which it may be adapted.

It will be evident that there is no waste of material, as the point iscompressed and elongated, thus ett'ecting-a saving of stock over themethods heretofore pursued, and making a much better article.

What we claim, and desire to secure byLetters Patent, is-

1. Pointing wires or rods by a revolving divided die that is pressedtogether substantially as and for the purposes specified.

cams k,- revolving shaftb, aw d, and dies 27, 186;. v 4 substantially asspecified.

' 3. The ring f and screw g,"in combination with the jaw d and dies ii,for regulating the amount said dies shall be allowed to open, asWitnesses: set forth. EDWARD T. BOAT,

In witness whereof we have hereunto set THEODORE S. BUD.

2. Thearrang'elilent of t he adjustable radial our sigmitures this 28thday of May, A. D.

